T56 to 4l80 swap now no speedometer/odometer?
06-18-2010, 12:08 AM
#1
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T56 to 4l80 swap now no speedometer/odometer? Any clue as to why i have no speedometer? We used the LsxTune.com T56 to 4L80e conversion harness and the 4L80 is full manual with RMVB and TB. I have heard I need to insert the 4L80 tables to the pcm. Anyone have knowledge with this issue?
06-18-2010, 01:46 AM
#2
I used same harness. It wasn't working at first then put main fuse in there! Duh. been working fine since. My trans is fullly controlled by computer and did get hptuner to blend file with 4l80 vehicle. You can't program it yourself need to send off your file and get it blended by hptuners. My speedo wasn wacked at first big time but that was because had wrong number in the speedo section. Once inputed right number speedo was fine.
